When He calls out the names of the moves (103 hand form), He says something between two movements, for example between grasp the bird's tail and single whip. It is something like "transition form", but I would like to know the exact translation and/or the Chinese characters (if possible). Thank you very much!

I believe Yang Zhenduo is saying µ¥±ÞµÄ...×ª¶¯ÊÆ (d¨¡nbi¨¡n de zhu¨£nd¨°ng sh¨¬), which means something like "transition posture/movement of single whip."

Prior to Wardoff Left, he also says À¿È¸Î²µÄ (l¨¢n qu¨¨ w¨§i de)..., which means "Grasp Sparrows Tail's" or "of Grasp Sparrow's Tail." He follows this with the four names of the individual postures, i.e., ’ò (p¨¦ng), ÂÄ (l¨·), ¼· (j¨«), and °´ (¨¤n). In English, this would be "Wardoff, Rollback, Press, and Push of Grasp Sparrow's Tail"; however, the order of the English would mean that the phrase "Grasp Sparrows's Tail" would be summarizing the previous four postures, rather than announcing them beforehand as in the Chinese.

Yang Zhenduo does something similar between Push (¨¤n) and Fist under Elbow, saying Öâµ×´·µÄ...ÞD„Ó„Ý (zh¨¯u d¨« chu¨ª de zhu¨£nd¨°ng sh¨¬), which means "transition posture/movement of Fist under Elbow."